body{
    font-family: Arial,sans-serif;
}

header {
    display: block;
    margin: 0 auto;
    width: 500px;
    text-align: center;
}

header #Button,#rankingList {
    width: 100px;
    height: 37px;
    padding: 10px;
    background: #bbad9a;
    color: white;
    border-radius: 10px;
    text-decoration: none;
    outline: none;
    border: none;
    cursor: pointer;
}

header #Button:hover,#rankingList:hover{
    background: #9f8b77;
}

header h1 {
    font-size: 60px;
    font-weight: bold;
    margin-top: 20px;
    margin-bottom: 20px;
}

header p {
    font-size: 25px;
    margin: 20px auto;
}

#grid-container {
    width: 460px;
    height: 460px;
    padding: 20px;
    margin: 40px auto;
    background: #bbada0;
    border-radius: 10px;
    position: relative;
}

.grid-cell {
    width: 100px;
    height: 100px;
    border-radius: 6px;
    background: #ccc0b3;
    position: absolute;
}

.number-grid{
    width: 100px;
    height: 100px;
    border-radius: 6px;
    line-height: 100px;
    font-size: 30px;
    font-weight: bold;
    text-align: center;
    position: absolute;
}

#RankingOp{
    width: 500px;
    height: 500px;
    margin: -540px auto 0 auto;
    position: relative;
    border-radius: 10px;
    display: none;
}

#RankingListDiv{
    width: 300px;
    height: 500px;
    float: left;
    border-radius: 10px;
}

#RankingListScore{
    width: 200px;
    height: 500px;
    float: right;
    border-radius: 10px;
}

.rankL {
    width: 300px;
    height: 50px;
    line-height: 50px;
    background-color: rgba(123, 113, 77, 0.5);
    text-align: center;
    color: white;
    font-size: 20px;
    font-weight: bolder;
    border-radius: 10px;
}

.rankR {
    width: 200px;
    height: 50px;
    line-height: 50px;
    background-color: rgba(123, 113, 77, 0.5);
    text-align: center;
    color: white;
    font-size: 20px;
    font-weight: bolder;
    border-radius: 10px;
}

#Score{
    width: 100px;
    margin-top: 50px;
}

#div{
    margin-top: 10px;
    height: 175px;
}

.scoreLine{
    margin-bottom: 10px;
}

#formI{
    display: none;
    width: 350px;
    height: 250px;
    background-color: #8f7a66;
    margin: -415px auto;
    position: relative;
    border-radius: 10px;
    text-align: center;
    color: white;
    font-size: 20px;
    font-weight: bolder;
}


.input{
    margin-top: 15px;
    margin-bottom: 20px;
    width: 120px;
}


#login{
    width: 150px;
    height: 40px;
    background-color: #7abbeb;
    cursor: pointer;
    color: white;
    font-size: 20px;
}

#gameover {
    background-color: rgba(123,102,85,0.5);
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 40px;
    position: absolute;
    top: 76px;
    left: 53px;
    width: 400px;
    text-align: center;
    display:table-cell;
    vertical-align:middle
}

#gameoverDiv{
    width: 500px;
    height: 500px;
    margin: -500px auto 0 auto;
    position: relative;
}